Question:class C1 {};class C2 extends C1 {};class C3 extends C1 {};C2 C2 =C3 C3c2==Press Esc to exit full screennew C2 () ;new C3 ();Analyze the following statement:(C2) ((C1) c3);Page <27> of 41CZOOM +*k

Answered: Question: class C1 {}; class C2 extends…

Question: class C1 {}; class C2 extends C1 {}; class C3 extends C1 {}; C2 C2 = C3 C3 = Press Esc to exit full screen new C2 (); new C3 (); Analyze the following statement: c2 = (C2) ((C1) c3);

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Problem 2: Route Planning You are on the development team for a Route Planning application. The team has already developed a class named NavigatorApp for storing and displaying the graph representing the road network. This class has a void displayShortestPath() function which takes the source and destination vertices of the trip and displays the shortest route between them. Using the strategy pattern, draw a class diagram of the system which will allow for the NavigatorApp to display the shortest driving, walking, or cycling route when the displayShortestPath() function is called. You can assume that another developer is in charge of making sure the appropriate strategy is correctly set and for calling the displayShortestPath() function Starter code /* Modify NavigatorApp (if necessary) */ class NavigatorApp { private: Graph map; public: void displayMap(Window * window); void displayShortestPath(Vertex source, Vertex destination, Window * window); /* write pseudo code for this function…
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True or false ? Assuming class Quiz { public: void TakeIt ( ); }; Quiz cs2b_quiz; Quiz * p_quiz = & cs2b_quiz; The syntax to invoke TakeIt ( ) member function using the pointer is: p_quiz->TakeIt ( );
Question is in the image #include <iostream> using namespace std; class Game { public: Game() { cout <<"Game Started"<<endl; } //destructor goes here }; class Quiz: public Game { public: Quiz() { cout <<"Quiz Started"<<endl; } //destructor goes here }; int main() { Quiz q; }
#include <iostream>using namespace std;class Player{private:int id;static int next_id;public:int getID() { return id; }Player() { id = next_id++; }};int Player::next_id = 1;int main(){Player p1;Player p2;Player p3;cout << p1.getID() << " ";cout << p2.getID() << " ";cout << p3.getID();return 0;} Run the program and give its output.
#include <iostream> using namespace std; class Player { private: int id; static int next_id; public: int getID() { return id; } Player() { id = next_id++; } }; int Player::next_id = 1; int main() { Player p1; Player p2; Player p3; cout << p1.getID() << " "; cout << p2.getID() << " "; cout << p3.getID(); return 0; } Execute and provide screenshot of output.
#include <iostream> using namespace std; class Player { private: int id; static int next_id; public: int getID() { return id; } Player() { id = next_id++; } }; int Player::next_id = 1; int main() { Player p1; Player p2; Player p3; cout << p1.getID() << " "; cout << p2.getID() << " "; cout << p3.getID(); return 0; } Run the program and give its output.
class implementation file -- Rectangle.cpp class Rectangle { #include #include "Rectangle.h" using namespace std; private: double width; double length; public: void setWidth (double); void setLength (double) ; double getWidth() const; double getLength() const; double getArea () const; } ; // set the width of the rectangle void Rectangle::setWidth (double w) { width = w; } // set the length of the rectangle void Rectangle::setLength (double l) { length l; //get the width of the rectangle double Rectangle::getWidth() const { return width; // more member functions here
#include <iostream> using namespace std;struct Triple{int row, col, value;}; class Matrix; class MatrixNode{friend class Matrix;friend istream& operator>>(istream&, Matrix&);private:MatrixNode *down, *right;bool head;union{MatrixNode *next;Triple triple;};MatrixNode(bool, Triple*);}; MatrixNode::MatrixNode(bool b, Triple *t){head = b;if (b){right = down = this;}else triple = *t;};class Matrix{friend istream& operator>>(istream&, Matrix&);public:~Matrix();MatrixNode*private:MatrixNode *headnode;}; Matrix::~Matrix(){// Return all nodes to the av list, which is a chain linked// via the right field.// av is a static variable pointing to the first of the av list.if (!headnode )return; // no nodes to deleteMatrixNode *x = headnode->right; headnode->right = av;av = headnode; // return headnode while (x != headnode) { // return nodes by rowsMatrixNode *y = x->right;x->right = av;av = y;x = x->next; // next row}headnode = 0;} istream&…
#include <iostream> using namespace std;struct Triple{int row, col, value;}; class Matrix; class MatrixNode{friend class Matrix;friend istream& operator>>(istream&, Matrix&);private:MatrixNode *down, *right;bool head;union{MatrixNode *next;Triple triple;};MatrixNode(bool, Triple*);}; MatrixNode::MatrixNode(bool b, Triple *t){head = b;if (b){right = down = this;}else triple = *t;};class Matrix{friend istream& operator>>(istream&, Matrix&);public:~Matrix();MatrixNode*private:MatrixNode *headnode;}; Matrix::~Matrix(){// Return all nodes to the av list, which is a chain linked// via the right field.// av is a static variable pointing to the first of the av list.if (!headnode )return; // no nodes to deleteMatrixNode *x = headnode->right; headnode->right = av;av = headnode; // return headnode while (x != headnode) { // return nodes by rowsMatrixNode *y = x->right;x->right = av;av = y;x = x->next; // next row}headnode = 0;} istream&…
class Base { public: int x, y: public: Base(int i, int j) { x = i; y = j; }}; class Derived : public Base public: Derived (int i, int j) { x = i; y = j; void display() {cout « x <<" "<< y; }}; int main(void) { Derived d(5, 5); d.display(); return e; Error O X=5,Y=5 X-0,Y=0 None of the above Other:
Problem C • -3: method consonants() had more than one loop • -3: method initials () had more than one loop • -3: at least one method used nested loops